Reverse the order of parameters to type list ops

[andyscott]

The order of parameters to type list operations is counter intuitive and should be switched.

Consider

 def apply[L <: TList, LF <: TList](a: Cop[L])(fs: Prod[LF])(
      implicit ev: TList.Compute.Aux[Op.Map[? => B, L], LF]
    ): B =
      fs.values(a.index).asInstanceOf[Any => B].apply(a.value)

This would be more clearly expressed as

 def apply[L <: TList, LF <: TList](a: Cop[L])(fs: Prod[LF])(
      implicit ev: TList.Compute.Aux[Op.Map[LF, ? => B, L]]
    ): B =
      fs.values(a.index).asInstanceOf[Any => B].apply(a.value)